Joshua 6:8

And it came to pass, when Joshua had spoken unto the people, that the seven priests bearing the seven trumpets of rams' horns passed on before the LORD, and blew with the trumpets: and the ark of the covenant of the LORD followed them.

Bearing the seven trumpets ... passed on before the Lord -before the ark, called "the ark of the covenant," for it contained the tables on which the covenant was inscribed.